Angle measuring device of underground coal mine transient electromagnetic instrument

Abstract

The utility model discloses an angle measuring device for an underground coal mine transient electromagnetic instrument, which is used for improving the angle accuracy during data acquisition of the underground coal mine transient electromagnetic instrument and can effectively improve the accuracy, objectivity and reliability of data acquisition. The underground coal mine transient electromagnetic instrument angle measuring device comprises a measuring device 1 used for collecting data, the measuring device 1 is fixedly connected to a fixing device 3 through a supporting device 2, a fixing device 34 of the fixing device 3 can fix a transmitting wire frame 4, the transmitting wire frame 4 and a receiving wire frame 5 are connected through a copper wire, the transmitting wire frame 4 can be rotated to drive the receiving wire frame 5, and the receiving wire frame 5 can rotate to drive the transmitting wire frame 4 to rotate. The transmitting wireframe 4 is rotated to a measuring position, the transmitting wireframe 4 is obliquely crossed with the horizontal plane due to rotation, the measuring device 1 is fixed on the transmitting wireframe 4, and the measuring device 1 is driven to rotate by rotating the transmitting wireframe 4.

Description

Technical Field

[0001] This utility model relates to the field of coal mine equipment, and in particular to an angle measuring device for a transient electromagnetic instrument in coal mines. Background Technology

[0002] Currently, the accuracy of the detection angle in transient electromagnetic exploration in coal mines plays a crucial role in data analysis. During field data acquisition, the wireframe needs to be detected at different angles. However, for wireframes with different angles, field data acquisition often relies on subjective estimation methods. These subjective estimation methods have significant errors in the detected angles and cannot accurately determine the azimuth angle of the detection. Generally, field data acquisition requires detection at multiple angles, typically 11 angles. Using subjective estimation for each angle can lead to errors in the accuracy of the original measurement data position, thus affecting the accuracy of the detection.

[0003] Currently, the detection angle of the wireframe is estimated subjectively by humans. For example, when an upward angle of 30 degrees is required, the angle is often determined by experience, which leads to inaccurate detection angles. In addition, for the same person, two or more on-site data collections may also be inconsistent. Since both are subjective estimates, the two or more measurements are not at the same location. This directly affects the analysis and judgment of geological change patterns at different times, and thus affects the accuracy of the detection.

[0004] Therefore, this utility model is proposed. Utility Model Content

[0005] The main purpose of this utility model is to disclose an angle measuring device for transient electromagnetic instruments in coal mines, which is used to solve the problem of detection accuracy caused by many factors in the existing technology.

[0006] To achieve the above objectives, this utility model provides an angle measuring device for transient electromagnetic instruments in coal mines, and adopts the following technical solution:

[0007] An angle measuring device for transient electromagnetic instruments in coal mines includes: a measuring device 1 for data acquisition; the measuring device 1 is fixedly connected to a fixing device 3 via a support device 2; a fixing device 34 of the fixing device 3 can fix a transmitting frame 4; the transmitting frame 4 and the receiving frame 5 are connected by a copper wire; rotating the transmitting frame 4 can drive the receiving frame 5; rotating the transmitting frame 4 to the measuring position; the transmitting frame 4 is oblique to the horizontal plane due to rotation; the measuring device 1 is fixed on the transmitting frame 4; rotating the transmitting frame 4 drives the measuring device 1 to rotate.

[0008] Furthermore, the measuring device 1 includes: a rotatable measuring sealed disk 12, one end of a movable pointer 14 is rotatably fixed at the center of the measuring sealed disk 12, a measuring reading scale 13 is attached to the inner side of the measuring sealed disk 12, and the measuring reading scale 13 is perpendicularly downward at -90 degrees, and one end of a plumb bob 15 is fixed at the center of the measuring sealed disk 12 and coincides with the measuring reading scale 13 at -90 degrees.

[0009] Furthermore, the support device 2 includes a movable support rod 22, an upper sealing port 21 on the movable support rod, and a lower sealing port 23 on the movable support rod. The movable pointer 14 is connected to the degree pointer 11 by being fixed on the movable support rod 22. The movable support rod 22 is embedded between the upper sealing port 21 and the lower sealing port 23 on the movable support rod.

[0010] Furthermore, the fixing device 3 includes a movable nut 33, which is movable in the nut groove 36. The nut groove 36 is fixed on the nut movable rod 37. Rotating the movable nuts 33 on the left and right sides drives the fixing device 34. The fixing device 34 can fix the transmitting wire frame 4. The nut movable rod 37 is fixed to the measuring sealing disk 12 through the fixed support rod 32 and the sealing disk connection port 31.

[0011] Furthermore, the measuring scale 13 has numerical markings every 10 degrees, with a minimum resolution of 1 degree.

[0012] This utility model device can effectively ensure the accuracy and objectivity of angle measurement during downhole transient electromagnetic detection. Since on-site data acquisition often relies on subjective human estimation, angle measurement is highly subjective, affecting the analysis and judgment of geological change patterns at different times, and thus affecting the accuracy of detection. This device can effectively ensure the accuracy of angle detection during implementation and can effectively improve the accuracy, objectivity and reliability of data acquisition. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a schematic diagram of the measuring device structure described in an embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the transient electromagnetic angle measuring device described in an embodiment of the present invention;

[0016] Figure 3This is another structural schematic diagram of the transient electromagnetic angle measuring device described in this embodiment of the present invention;

[0017] Figure 4 This is another schematic diagram of the angle measuring device of the transient electromagnetic instrument described in this embodiment of the present invention. Detailed Implementation

[0018] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0019] 1-Measuring device

[0020] 11-Angle pointer, 12-Measuring closed disc, 13-Measuring reading scale, 14-Moving pointer, 15-Plumb line

[0021] 2-Support device

[0022] 21- Upper sealed opening of the movable support rod; 22- Movable support rod; 23- Lower sealed opening of the movable support rod.

[0023] 3-Fixing device

[0024] 31-Sealed disc connection port; 32-Fixed support rod; 33-Modible nut; 34-Fixer; 35-Anti-detachment device; 36-Nut groove; 37-Nut movable rod

[0025] 4-Emitting Wireframe

[0026] 5-Receiver Frame

[0027] Figure 1 This is a schematic diagram of the measuring device structure described in an embodiment of the present invention.

[0028] Figure 2 This is a schematic diagram of the transient electromagnetic angle measuring device described in an embodiment of the present invention.

[0029] Figure 3 This is another structural schematic diagram of the transient electromagnetic angle measuring device described in this embodiment of the present invention.

[0030] Figure 4 This is another schematic diagram of the angle measuring device of the transient electromagnetic instrument described in this embodiment of the present invention.

[0031] See Figures 1 to 4As shown, an angle measuring device for transient electromagnetic instruments in coal mines includes: a measuring device 1 for data acquisition; the measuring device 1 is fixedly connected to a fixing device 3 via a support device 2; a fixing device 34 of the fixing device 3 can fix a transmitting frame 4; the transmitting frame 4 and the receiving frame 5 are connected by copper wire; rotating the transmitting frame 4 can drive the receiving frame 5; rotating the transmitting frame 4 to the measuring position, the transmitting frame 4 is oblique to the horizontal plane due to rotation; the measuring device 1 is fixed on the transmitting frame 4; rotating the transmitting frame 4 drives the measuring device 1 to rotate. The measuring device 1 includes: a rotatable measuring sealed disk 12; one end of a movable pointer 14 is rotatably fixed at the center of the measuring sealed disk 12; a measuring reading scale 13 is attached to the inner side of the measuring sealed disk 12, with the -90 degree mark of the measuring reading scale 13 pointing vertically downwards; one end of a plumb bob 15 is fixed at the center of the measuring sealed disk 12 and coincides with the -90 degree mark of the measuring reading scale 13. The support device 2 includes a movable support rod 22, an upper sealing port 21 on the movable support rod, and a lower sealing port 23 on the movable support rod. The movable pointer 14 is connected to the degree pointer 11 by being fixed on the movable support rod 22. The movable support rod 22 is embedded between the upper sealing port 21 and the lower sealing port 23 on the movable support rod. The fixing device 3 includes a movable nut 33, which is movable in a nut groove 36. The nut groove 36 is fixed on the movable nut rod 37. Rotating the movable nuts 33 on the left and right sides drives the fixing device 34, which can fix the transmitting wire frame 4. The movable nut rod 37 is fixed to the measuring sealing disk 12 by the fixed support rod 32 and the sealing disk connection port 31.

[0032] Before use, perform a device check. Before data acquisition, check the measuring device 1. Pick up the measuring sealed plate 12 and rotate it while observing the movable pointer 14. Ensure the movable pointer 14 can move freely within the measuring sealed plate 12. Adjust the measuring sealed plate 12 so that the -90 degree mark on the measuring reading scale 13 is vertically downward. Ensure the plumb bob 15 coincides with the -90 degree mark on the measuring reading scale 13. Observe whether the movable pointer 14 points to 0 degrees. If it is correct, the measuring device 1 is correct; otherwise, the device needs to be replaced immediately. Before data acquisition, remove the measuring device 1 from the instrument case and check its integrity. The movable pointer 14 and the angle pointer 11 should both be within the measuring sealed plate 12. If any damage is found, the device should be replaced; otherwise, proceed with the process. Step 3: Pick up the measuring sealed plate 12 and place it close to the transmitting frame 4. Adjust the measuring reading scale 13 so that the -90 degree direction is parallel to the transmitting frame 4. Place the transmitting frame 4 vertically, ensuring that the -90 degree is downward and the 90 degree is upward in the measuring reading scale 13. This position is the initial position. Below the movable pointer 14 is a plumb bob 15. The movable pointer 14 is fixed on the movable support rod 22 and can rotate freely. The movable pointer 14 is connected to the degree pointer 11 by being fixed on the movable support rod 22. The movable support rod 22 is embedded between the upper sealing opening 21 and the lower sealing opening 23 of the movable support rod. Rotate the movable nuts 33 on both sides. The movable nuts 33 can move in the nut groove 36. The nut groove 36 is fixed on the nut movable rod 37. Rotate the movable nuts on both sides. 33 thus drives the retainer 34, which can fix the transmitting wire frame 4. When the movable nuts 33 on both sides reach the designated position, the retainer 34 can be fixed on the transmitting wire frame 4. The movable nut rod 37 is fixed to the measuring sealed plate 12 through the fixed support rod 32 and the sealed plate connection port 31. Pick up the transmitting wire frame and rotate the transmitting wire frame 4 to drive the receiving wire frame 5. The transmitting wire frame 4 and the receiving wire frame 5 are connected by copper wire. Rotate the transmitting wire frame 4 to the measuring position. Due to the rotation, the transmitting wire frame 4 is oblique to the horizontal plane. The measuring device 1 is fixed on the transmitting wire frame 4. Due to the rotation of the transmitting wire frame 4, the measuring device 1 is driven to rotate. After the measuring device 1 rotates, the -90 degree direction in the measuring reading scale 13 rotates together with the transmitting wire frame 4. After reaching the designated position, the transmitting wire frame 4 is activated. When the ray frame 4 stops, the plumb bob 15 begins to hang downwards under the influence of gravity. The movable pointer 14 is connected to the plumb bob 15 and swings downwards, thereby causing the angle pointer 11 to swing. When the angle pointer 11 stops, the degree reading on the measuring scale 13 on the measuring sealed plate 12 can be read, which is the accurate angle of the current position. The measuring scale 13 has a numerical mark every 10 degrees, with a minimum resolution of 1 degree. After completing one measurement, simply rotate the ray frame 4 again to complete the measurement of multiple angles. After collecting all the field data, place the ray frame 4 horizontally and rotate the movable nut 33 outwards to drive the movable rod 37 of the nut, which can separate the fixture 34 from the ray frame 4. The anti-detachment device 35 can prevent the movable nut 33 from rotating outwards and falling off.After separating the fixture 34 from the transmitting frame 4, the measuring device 1 and the fixture 3 can be removed, neatly arranged, and placed in the instrument case.

[0033] The measuring scale (13) has numerical markings every 10 degrees, with a minimum resolution of 1 degree.

[0034] The key technical point of this utility model is:

[0035] 1. Through the measuring device, both the movable pointer and the angle pointer are inside the measuring sealed plate. The movable pointer can drive the angle pointer to read the angle value objectively and accurately.

[0036] 2. The use of a fixing device allows for convenient and quick connection between the transmitting frame and the measuring device, saving time during measurement.

[0037] 3. The measuring device is fixed inside the measuring sealed plate by the support device. The measuring device is connected to the fixing device by the support device. The support device is connected to the transmitting wire frame by the fixing device.

[0038] This utility model device can effectively ensure the accuracy and objectivity of angle measurement during downhole transient electromagnetic detection. Since on-site data acquisition often relies on subjective human estimation, angle measurement is highly subjective, affecting the analysis and judgment of geological change patterns at different times, and thus affecting the accuracy of detection. This device can effectively ensure the accuracy of angle detection during implementation and can effectively improve the accuracy, objectivity and reliability of data acquisition.

[0039] The above description only illustrates certain exemplary embodiments of this invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of this invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of this invention.

Claims

1. A coal mine underground transient electromagnetic instrument angle measuring device, characterized in that, include: The measuring device (1) for data acquisition is fixedly connected to the fixing device (3) by the support device (2). The fixing device (34) of the fixing device (3) can fix the transmitting frame (4). The transmitting frame (4) and the receiving frame (5) are connected by copper wire. Rotating the transmitting frame (4) can drive the receiving frame (5). Rotating the transmitting frame (4) to the measurement position, the transmitting frame (4) is oblique to the horizontal plane due to rotation. The measuring device (1) is fixed on the transmitting frame (4). By rotating the transmitting frame (4), the measuring device (1) is driven to rotate.

2. The angle measurement device for a coal mine underground transient electromagnetic instrument according to claim 1, characterized in that, The measuring device (1) includes: a rotatable measuring sealed disk (12), one end of a movable pointer (14) is rotatably fixed at the center of the measuring sealed disk (12), a measuring reading scale (13) is attached to the inner side of the measuring sealed disk (12), and the measuring reading scale (13) is perpendicularly downward at -90 degrees, and one end of a plumb bob (15) is fixed at the center of the measuring sealed disk (12), and coincides with the measuring reading scale (13) at -90 degrees.

3. The angle measurement device for a coal mine underground transient electromagnetic instrument according to claim 2, characterized in that, The support device (2) includes a movable support rod (22), an upper sealed port (21) on the movable support rod, and a lower sealed port (23) on the movable support rod. The movable pointer (14) is connected to the degree pointer (11) by being fixed on the movable support rod (22). The movable support rod (22) is embedded between the upper sealed port (21) and the lower sealed port (23) on the movable support rod.

4. The angle measurement device for a coal mine underground transient electromagnetic instrument according to claim 3, characterized in that, The fixing device (3) includes a movable nut (33), which is movable in the nut groove (36). The nut groove (36) is fixed on the nut movable rod (37). Rotating the movable nuts (33) on the left and right sides drives the fixing device (34). The fixing device (34) can fix the transmitting wire frame (4). The nut movable rod (37) is fixed to the measuring sealing plate (12) through the fixed support rod (32) and the sealing plate connection port (31).

5. The angle measurement device of the underground coal mine transient electromagnetic instrument according to claim 4, characterized in that, The measuring scale (13) has numerical markings every 10 degrees, with a minimum resolution of 1 degree.

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